JPS58212672A - Cassette adaptor - Google Patents

Abstract

PURPOSE:To prevent a tape from damages due to malfunction by providing the titled cassette adaptor with locking members interlocking with the operation to unload/load the tape from/to a small-sized tape cassette take in a case body having the same size as a standard size tape cassette. CONSTITUTION:The small-sized tape cassette 1 is taken in the case body 6 having the same size as the standard size tape cassette. When a driving rack 15 is moved from the shown position to the left, arms 9, 11 on the take-up and supply sides are opened right and left and guide orlls 10, 12 unload the tape 3 from the cassette 1 and load it to a recording and reproducing position. The locking members 23, 27 and 29, 32 put the guide rolls 10, 12 between them respectively. Simultaneously, a cassette locking member 37 excited by a spring 38 advances to lock the cassette 1. When the tape 3 is to be unloaded, the driving rack 15 is pushed to the right direction and returned to the shown position and the lock member 37 is unlocked. Said constitution disables the cassette from being removed without unloading the tape 3, so that the tape can be prevented from damages.

Description

Detailed Description of the Invention The present invention provides a tape cassette (hereinafter referred to as a second tape cassette) which is a conventional tape cassette (hereinafter referred to as a first tape cassette) with a smaller external shape by narrowing the distance between the reels. The present invention relates to a cassette adapter for use in a device in which the first tape cassette is used.

Compared to compact tape cassettes for audio, tape cassettes used in video tape recorders, etc. are considerably larger due to standards such as tape width and distance between reels, and even in portable equipment, Since the tape cassette is large, there is a limit to its miniaturization, which is a major problem.

Furthermore, with the current technology, it is difficult to manufacture small tape cassettes with narrow tape widths due to image quality problems.

For this reason, as a means of downsizing tape cassettes and equipment, the tape width is the same as that of the conventional first tape cassette, and the distance between the reels is the same as that of the first tape cassette. In addition to reducing the amount to about 100 yen,
Compact second tape cassettes have come to be considered that have a tape capacity of 4 to 40% less than the full-sized first tape cassette.

Such a small second tape cassette not only provides the same image quality as the current first tape cassette, but also allows the tape cassette itself to be made smaller.
Although it is possible to downsize equipment that uses tape cassettes, the amount of tape will be reduced, so the recording time will be shorter than the current first tape cassette. . When considering recording time and miniaturization, it is desirable to change the tape cassette used depending on the purpose, etc., and it is desirable to use a small second tape cassette that is compatible with the first tape cassette. In other words, it is required that the first tape cassette can also be used in equipment that uses the tape cassette, and a cassette adapter that satisfies this requirement becomes necessary.

SUMMARY OF THE INVENTION An object of the present invention is to prevent the magnetic tape from being damaged when the second tape cassette is removed from the cassette storage portion in such a cassette adapter.

Hereinafter, an embodiment of the cassette adder-free of the present invention will be explained using the drawings of FIGS. 1 to 3.

In the figure, 1 is a second tape cassette 1, and this second tape cassette 1 rotatably supports and stores reels 4 and 6 on which a magnetic tape 3 is wound in a nozzle case 2. At the same time, a predetermined running path is formed on the front side so that the magnetic tape 3 is exposed to the outside. In this second tape cassette 1, one supply side reel 4 can be operated from the bottom side of the half case 2 through a window provided at the bottom of the half case 2, so that the tip of the reel stand of the device can be operated from the bottom side of the half case 2. The reel 6 on the other pick-up side is rotatably supported by a reel shaft (not shown) implanted in the half case 2, and a gear is attached to the outer periphery. A portion 5a is formed, and is rotated by a gear on the driving source side that meshes with the gear portion 5a through a window on the side surface of the half case 2.

6 is the main body case of the adapter, and this main case 6
has the same external dimensions as the first tape cassette, and the second tape cassette 1 is loaded into this main body case 6. In this main body case 6, at a position corresponding to the reel stand of the video tape recorder, a lugia 7 is rotatably supported and can be attached to the tip of one of the reel stands, and the other reel stand is rotatably supported. A window (not shown) is provided at the tip of the reel 4 for attaching the reel 4 of the second tape cassette 1.The reel gear 7 has one gear of an idler gear 8 having a two-stage gear structure. The gear portion 6a of the reel 5 of the second tape cassette 1 meshes with the other gear of the idler gear 8, and the reel 6 of the second tape cassette 1 rotates as the reel gear 7 rotates. to run the magnetic tape 3.

A pick-up side pull-out arm 9 in the shape of a fishing needle is arranged in the main body case 6 so as to rotate around a shaft 9a, and one end of the pick-up side pull-out arm 9
A guide roller 10 is attached for hooking the magnetic tape 3 of the second tape cassette 1 and pulling it out at a predetermined position.

The supply side drawer arm 11 has a shaft 11a at a position opposite to the take-up side drawer arm 9 of the main body case 6.
Similarly to the pickup arm 9, the magnetic tape 3 of the second tape cassette 1 is hooked onto one end of the supply side pullout arm 11, and the magnetic tape 3 of the second tape cassette 1 is hooked to a predetermined position. A guide roller 12 is attached for pulling out to the position. A knob 11b is provided at the other end of this supply side drawer arm 11, and the knob 11
b is fitted into an elongated hole 13b of a dogleg-shaped connecting arm 13 arranged to rotate about a shaft 13a.

Furthermore, at the other end of this connecting arm 13 ゛
A knob 13c is provided, and the knob 13c is connected to the shaft 14.
The connecting arm 14 is fitted into a long hole 14b of a connecting arm 14 that is arranged to rotate around a. The other end of this connecting arm 14 is connected to the Tigua 1. It engages with a knob 9b provided at the other end of the pull-out arm 9.

A drive rack 15 is engaged with a pinion gear 16 that is rotated manually or by a drive source such as a motor, and a cam groove 16a is provided on the lower surface of the drive rack 16, into which the knob 9b of the pickup arm 9 is fitted. ing.

The cam groove 15a of the drive rack 15 has the drive rack 1
There is a part that is parallel to the moving direction of the arm 5 and a part that is inclined, and as shown in FIG. Drawer arm 9 and supply supine 1 drawer arm 11
spreads outward and is located at the tape guide position of the first tape case, and as shown in FIG. , the pick-up side pull-out arm 9 and the print-side pull-out arm 11 move inward and are in a state before tape pull-out.

1. A cam surface 15c having a groove 15b is provided on the soil surface of the drive rack 15, and the tip of an arm 17 that is rotatable around JIQji7a comes into contact with the soil surface, and the drive rack 15 is held at a predetermined position. When the arm 17 moves vertically, the tip of the arm 17 fits into the groove 15b, thereby causing the arm 17 to rotate about the shaft 17a. One end of an L-shaped connecting angle 18 that is rotatable about a shaft 18a is connected to the tip of this arm 17 via a connecting arm 19.
The displacement of arm 17 is transmitted to connecting angle 18 .

In addition, the elongated hole 18b at the other end of this connecting angle 18 has a
The knob 21a of the guard panel opening/closing rod 21, which is guided by the guide shaft 201 and slides in the width direction of the main body case 6, is fitted therein. That is, since the tip of the arm 17 fits into the groove 15b of the cam surface 15c of the drive rack 15, the guard panel opening/closing rod 21 slides toward the rear side of the main case 6, and the tip of the arm 17 fits into the groove 15b. When it is not closed, the Ganid panel opening/closing rod 2
1 slides toward the front side of the main body case 6.

Reference numeral 22 denotes a guard panel that is openable and closable at the front opening of the main body case 6 of the adapter, and the shafts at both ends of this guard panel 200 are inserted into bearing holes provided in the side plates of the main body case 6, and the rotation Supported for free movement.

Reference numeral 23 denotes a locking member on the take-up side that is rotatably supported by a shaft 24, and this locking member 23 is
A spring 26 whose one end is engaged with a protrusion 26 constantly biases the main case 60 in a direction away from the lock portion 27. The protrusion 21b of the guard panel opening/closing rod 21 is engaged with the rear end of the locking member 23 via a plate spring 28, and the guard panel opening/closing rod 21 is prevented from sliding toward the rear side of the main body case 6. , lock member 2
3 is pushed by the protrusion 21b, thereby the locking member 23 rotates around the shaft 24 and clamps the guide roller 100i together with the aforementioned locking portion 27. Also, a 26K spring is used to return to the original position.

Therefore, it is done.

Reference numeral 29 denotes a locking member on the supply side. This locking member 29 is rotatable about a shaft 30 and is constantly urged by a spring 31 in a direction away from the locking portion 32 of the main body case 6. The rear end of this lock member 29 is in contact with the tip of a slide arm 34 that is guided by a guide plate 33 and slides in the width direction of the main case 6. By pressing , the locking member 29 rotates around the shaft 30, and the MI+ of the guide roller 12 is rotated together with the locking portion 32.
to hold.

Further, a leaf spring 35 is attached to the rear end of the slide arm 34.
is attached to the plate spring 35, and a cam plate 36 rotatably attached to the shaft 13a of the connecting arm 1'3 is in contact with the leaf spring 35. This cam plate 36 is connected to the drive rack 16.
The tip of the operating arm 15d provided on the cam plate 36 is pressed by the operating arm 15d' to rotate the cam plate 36, and the slide arm 34 is pushed by the cam plate 36 via the leaf spring 36, causing the slide arm to slide. The arm 34 slides toward the front side of the main case 6.

Reference numeral 37 denotes a cassette locking member that can freely protrude and retract into the cassette storage portion on the second tape cassette 1 of the cassette storage portion of the main body case 6, and this cassette locking member 37 rotates around a shaft 38. It is freely supported and disposed, and is biased by a spring 39 in the direction of protruding into the cassette storage section. The cassette locking member 37 is rotated by the connecting arm 14, and by pushing the rear end of the cassette locking member 37 with the connecting arm 14, the cassette locking member 37 resists the biasing force of the spring 39. Rotate and pull it out from inside the cassette storage compartment. Further, this cassette locking member 37 is pulled in from the inside of the cassette storage section when the tape storage operation is completed.

In such a configuration, when the drive rack 16 starts to move rightward from the state shown in FIG. , the take-up side pull-out arm 9 does not rotate.

On the other hand, the tip of the arm 17 is connected to the cam surface 1 of the drive rank 16.
Since it is located in the groove 15b of the arm 17
rotates the connecting angle 18, whereby the guard panel opening/closing rod 21 slides toward the front side of the main body case 6 and pushes the shaft 22a of the guard panel 22, so that the guard panel 22 opens.

At this time, the guard panel opening/closing rod 21 slides toward the front side of the main body case 6, and the drive rack 15
The engagement between the operation arm 15d and the cam plate 36 is disengaged, and the slide arm 34 slides toward the rear side of the main body case 6, so that the guard panel opening/closing rod 21 and the slide arm 34 can no longer bias the locking member 23.29. This releases the locked state of the guide rollers 10.12.

Then, when the drive rack 15 further moves to the right and the knob 9b of the pick-up side pull-out arm 9 reaches the part of the cam groove 15a that is inclined with respect to the moving direction, the kick-up side pull-out arm 9 moves inward. Rotate. by this,
The connecting arm 14 engaged with the knob 9b also rotates around the shaft 14a, and the connecting arm 14 [to which the connecting arm 13 is connected also rotates around the shaft 13a, thereby causing the supply side drawer to rotate] The arm 11 rotates in the 111 direction around the shaft 11a.

At this time, the connecting arm 14 [therefore, the cassette locking member 3
Since the rear end of the cassette locking member 7 is pushed, the cassette locking member 37 rotates about the shaft 38 and is retracted from the inside of the cassette storage section.

When the pick-up side pull-out arm 9 and the supply-side pull-out arm 11 rotate inward in this way, the reel 5 is rotated by the reel gear 7, so that the pick-up side pull-out arm 9 and the supply-side pull-out arm 11 [
Therefore, the magnetic tape 3 that had been drawn out of the half case 2 is now accommodated within the half case 2. Second
As shown in the figure, when the magnetic tape 3 is housed in the half case 2 and the locked state by the cassette lock remover 37 is released, the second magnetic tape 3 is released from inside the adapter.
tape cassette 1 can be taken out.

Furthermore, when drawing out the tape, by moving the drive rack 16 to the left from the state shown in FIG. Pulling out operation of the magnetic tape 3 by the supply side drawing arm 11, locking member 2
Axis 10a, 1 of guide roller 10.12 according to 6.32
The clamping operation of the guard panel 2a and the closing operation of the guard panel 22 can be performed as a series of operations.

As described above, according to the cassette adapter of the present invention, until the tape storage operation is completed, the second tape cassette stored in the cassette storage section is locked by the cassette locking member, so that the magnetic tape cannot be pulled out. This prevents the second tape cassette from being taken out while the second tape cassette is being loaded and taken out, thereby preventing the magnetic tape from being erroneously damaged and shuffled.

[Brief explanation of drawings]

FIG. 1 is a plan view of a cassette adapter according to an embodiment of the present invention showing the state when the tape is being pulled out, FIG. 2 is a plan view showing the state of the cassette adapter during tape storage operation, and FIG. FIG. 3 is a perspective view showing the main structure of the cassette adapter. 1...Second tape cassette, 2...
Half case, 3...Magnetic tape, 4.5...
...Reel, 6...Main body Kenneth, 7...
...Reel gear, 8...Idler gear, 9.
...Tick-up side drawer arm, 11...
・Supply side drawer arm, 13.14...Connection arm, 16...Drive rack, 3 completed...
・Cassette lock member. Name of agent: Patent attorney Toshio Nakao and one other person

Claims (1)

[Claims] a main body case having a cassette storage section for storing a second tape cassette having a shorter reel-to-reel distance than the first tape cassette and having the same dimensions as the first tape cassette; a tape drawer/accommodating means for performing a pulling operation for pulling out a magnetic tape from the second tape cassette to a tape guide position of the first tape cassette and a storing operation for storing the magnetic tape in the second tape cassette; and a reel driving means for driving a reel of a second tape cassette arranged in the main body case and housed in the main body case, the tape cassette can be freely projected and retracted into the cassette storage part over the second tape cassette in the cassette storage part. A cassette adapter 0 is provided with a freely movable cassette locking member, the cassette locking member is I-tied to the tape drawer storage means, and the cassette locking member is configured to be retracted from the inside of the cassette storage section when the tape storage operation is completed.